my mouse bites the other mouse!?

Seperate them give them there own cages

You definitely have a territory dispute. The dominating mouse is not going to share the wheel with the other mouse.

This may progress to other things as well or it might just be the wheel. You could try getting another wheel. This might solve the problem since the mouse can only be on one wheel at a time.

All rodents have some cleaning agent in their saliva that is red, so it might not be blood that you are seeing. I have 2 female rats and when they clean themselves, they get red patches all over themselves. The dominance is only a problem if the more aggressive mouse is seriously injuring the other or if the submissive mouse is not getting food because of it. If that's the case, I would definitely seperate them. But it seems normal to me. Just watch the eating. It can be a problem.

They are establishing what is known as pecking order... alpha mouse picks on bravo mouse so that bravo mouse knows that alpha mouse is in charge... it's normal... i don't think there has ever been a case of a mouse that enjoys or gets pleasure from violent behavior....

I. also anyone who takes a mouse to a vet will probably be laughed at.... actually, that just gave me an idea.. take the "mean " one to the vet... and leave it there... then buy a "nicer one"

Thats so sad. poor little mouse! That happened with my dogs. Zoey Got so aggressive she almost severly injured snickers. We later found out that she has a little bit of chow-chow in her and is naturally agressive. What we did so that we could keep both dogs we Reall ylove is we seperated them. This made feeding time easier and its now safer for snickers.

You should probably get another cage and put the Injured mouse in it. so that he/she gets the better end of the deal. Saftey and a new space!

at first i thought it was a dominance issue, but there should not be blood. take the victim to the vet, and then try re-introducing them, if they start fighting, seperate them.

were they together when you bought them, or did you just now put them in the same cage, w/o them knowing each other first?

do no longer positioned them interior a similar cage. Tootsie ought to die. which you need to to attempt returning Tootsie or Pikachu or putting them in separate cages. it is greater proper to be secure than sorry. And if there is already been blood, you're headed interior the incorrect path, and that i'm particular you do no longer want tootsie to die. do no longer go away them mutually and not something undesirable will take place to Tootsie

If they are both males than it is the natural way of animals, they just fight. the other one might be a bigger jerk and u just dont notice

get 2 cages

If they are both males than it is the natural way of animals, they just fight. the other one might be a bigger jerk and u just dont notice